202 



Cincinnati Society of K T atnral History. 



describe it. In a letter from Dr. R. W. Shufeldt of Washington, D. 

 C. (just received through Prof. Robt. Ridgway) he says the loop 

 formed by the flexure of the trachea does not extend so far down in 

 the female as in the male. Dr. Shufeld will shortly issue a paper on 

 the anatomy of this species. This peculiar condition of the trachea 

 of the Cracida was probably first described by Yarrell, 1831, and in 

 La Naturaleza (Mexico) 1889, p. 278, is a figure (very poor) showing 

 this arrangement, perhaps taken from a female as the tracheal loop 

 does not extend so far down. 



This specimen is preserved in the Museum of this Society, 

 No. 8133. 



Offal is vetula mac call i Baird. 

 I N. S. 



